Video: Falcon 9 hot fire

A SpaceX Falcon 9 rocket launched at 4:25 p.m. EST (2125 GMT) Wednesday from Cape Canaveral with the GovSat 1 communications satellite, a military-grade craft to relay signals for Luxembourg and allied nations. SpaceX’s launch team scrubbed an attempt Tuesday to replace a transducer on the company’s Falcon 9 rocket and wait for improved weather conditions.

Speaking publicly for the first time since a Falcon 9 rocket failure that destroyed a Dragon cargo capsule for the International Space Station, SpaceX founder Elon Musk said Tuesday that engineers are still piecing together what happened during the June 28 accident in hopes of announcing more details within a few days.

SpaceX scrubbed the launch of a nearly 7.5-ton Intelsat communications satellite Sunday after a computer-triggered abort halted the countdown in the final 10 seconds.